Synonyms of feebleminded

1 Syllable
slow, dumb
2 Syllables
tomfool, simple, foolish, witless, loopy, stupid
3 Syllables
retarded, moronic, dull-witted, half-witted, weak-minded, softheaded, dim-witted
4 Syllables
imbecilic, cockamamy
5 Syllables
unintelligent